Railway-car ventilator



(No Model.) 2 Sheets-Sheet 1.

F. HANSON.

RAILWAY GAR VENTILATOR.

No. 368,148. Patented Aug. 9, 1887.

(No Model.) 2 Sheets-Sheet 2. F. HANSON.

P AILWAY OAR VENTILATOR.

Patented Aug. 9, 1887.

f Inventor WM a? o Witnesses aazzcww UNITED STATES PATENT OFFICE.

FREEMAN HANSON, OF HOLLIS, ASSIGNOR OF ONEHALF TO HERBERT G. BRIGGS, OFPORTLAND, MAINE.

RAILWAY-CAR VENTILATOR.

SPECIFICATION forming part of'Letters Patent No. 368,148, dated August9, 188'] Serial No. 235.021. (No model.)

To all whom, it may concern:

Be it known that I, FREEMAN Hanson, residing at Hollis, in ,the countyof York and State of Maine, have invented certain newand 5 usefulImprovements in RailwayCar Ventilators; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and I use the same.

Figure 1 is a perspective view showing the monitor root'of arailroad-car provided with this invention. Fig. 2 is a plan view of themonitor roof, a part removed, showing, generally, the internal structureas well as operation of this invention. Fig. 3 is a longitudinal centralsection of the roof. Fig. 4 is a centralcrosssection through thewind-wheels and fan. Fig. 5 -is a detail of the longitudinal 2o foul-airtube when the end of the monitor roof is curved downward. Fig. 6 is adetail showing the anti-friction rollers ofthejournals for the fan.

Same letters of reference in the several fig ures indicate correspondingparts. v

This invention belongs that class known as railroad-car ventilators; andthe novelty in the present instance consists in the construction andcombination of the several parts, whereby in asimple and economicalstructure a very efficient and durable means for ventilating isprovided, all as will now be more fully set out and explained.

In the accompanying drawings, the car A is provided with the usualmonitor roof B. Lengthwise above this is placed theventilating-structure, which consists of the central chamber, 0, thechambers or passages D, one on each side of said central chamber, andthe longitudinal foul-air tube E, passing through and communicating withthe said central chamber and the valves which regulate the flow of airthrough the said side passages and tube. The roof of the monitor havingnumerous perforations, a, the :l'oul air inside of the car is drawnthrough these perforations inside the chamber Q through the openings 6'by means of the fan F, centrally situated, one half of which rotateswithin the longitudinal tube E. The other half of the fan rotates withina shield, 6 provided at its sides, where it fits over the i'ans shaft,with ports (2, which per mit the free passage of air from the centralchamber, 0, into the longitudinal tube E.

The fan is propelled when the car is in mo tion by means of thewind-wheels ffon the respective ends oi'its shaftf, and respectivelylocated on either side of the chamber 0 in the chambers D D. The windreaches these wheels through the open ends (Z of said chambers. The foulair, being thus drawn from the upper part of the car into chamber 0, issucked through the ports a, and is thence forced into the longitudinaltube E, and through it out of its rear end. The forward end of the tubeE is closed by the flap-valve c automatically or by the rod 6". There issuch a valve at the rear of the tube, which is open when the fan is inoperation.

The speed with which the fan F is operated can be regulated with theutmost nicety by means of the valves (1 over the ports (I in the endsot' the side chambers, D. These valves can be opened wide, so as to makeflaring mouths to the chambers, or be partly closed, or the valve on oneside can be opened and the other closed. By a suitable manipulation inthis general way of these valves any desired opening can be provided andany desired speed for the fairwheel be thus obtained. said valves isoperated by the traimnan from the inside of the car by means of thevalverods 11*. The valve d is provided at one side with sockets closedat the top, into which the rods (1 fit. This construction obviates alldanger of rain leaking through about the bearings of the rods (1 \Vhenthe ears are at a station, the doors being usually wide open, there isno special need that the apparatus should be at work. hen the train isin motion, especially in cool weather and with a crowded car,thenecessity of the operation is felt.

This apparatus is particularly valuable for sleeping-cars, as it affordsthe very best facilities to drawotl' the impure air without creating anydraft, a point of special value in a sanitary point of view.

This structure, as will be noticed from the foregoing description, isvery simple and very durable, and not at all expensive. It can beapplied to any car having the monitor roof, and 111 its exterior forms,85c, can be made a In apvery ornamental addition to the roof.

Each of plying the device when building a car, the structure can be somerged in the roof as not to cause any special change in the generalappearance of the roof.

Having now described my invention, what I consider new, and desire tosecure by Letters Patent, is-

1. In combination with a perforated roof of a monitor car, a centralchamber, 0, communicating with the interior of the car by theperforations in said roof, a longitudinal airtube extending through saidchamber and communicating therewith, and having valves wheels,wherebythe speed of revolution of the wheels and fan can be regulated at will,substantially as described.

4. In combination with the longitudinal main chamber and its fan, andthe foul-air tube E, having valves in each end, the side chambers havingthe wind-wheels operating the fan, said chamber having flaring endsprovided with valves operated from the interior of the car.

5. In a railway-car, substantially as described, a ventilating apparatusconsisting, essentially, of a perforated roof, a chamber over said roof,a foul-air tube passing through said chamber and communicatingtherewith, a fan-wheel for drawing the air from the car and forcing itinto said tube, and wind-wheels for operating said fan, substantially asdescribed.

In testimony that I claim the foregoing as my own I have aflixed mysignature in the presence oftwo witnesses.

FREEM AN HANSON.

W'itnesses:

GEORGE F. EMERY, H. G. BRIGGS.

